Uploaded August 2025 | Updated September 2026, 3 weeks ago
Original Video - youtu.be/Ahn2P_4TDrU (Unions are bad for building... right?)
Article talking about union CSG changes - devforum.roblox.com/t/studio-solid-modeling-csg-performance-and-robustness-improvements/3256495?page=3
My Discord - discord.gg/6gFCQmzeHQ
I want to give a huge shoutout to all the really cool people who have left comments on my last video (Unions are bad for building... right? youtu.be/Ahn2P_4TDrU)
I have learned a ton from them and have made this video detailing all the new things I have learnt when it comes to making unions - Whilst also talking about ways to optimise your union usage without using blender. Hopefully this video is helpful to those who don't see the need to fit blender into their Studio workflow - keeping these principles in mind may help solve some of the problems amateur developers can have with performance in their games and studio workplaces.
In this video I also discuss the changes to union CSG operations, as detailed in the article (devforum.roblox.com/t/studio-solid-modeling-csg-performance-and-robustness-improvements/3256495?page=3)
These changes genuinely make using unions a lot more viable for regular applications, which is a relief since this update has been a long time coming.
Song used - The Scenic Sewers - Ratchet and Clank (2002) OST youtu.be/Y62y-hO0knY
Play my map Archipelago in Traitor Town for free here -
roblox.com/games/255236425/Traitor-Town
Traitor Town Discord -
discord.com/invite/35ZQYmXAJQ
My Discord - discord.gg/6gFCQmzeHQ
My Twitch-
twitch.tv/kaiwala23
0:00 - Intro
0:13 - Method 1: Reimporting unions
4:40 - Method 2: Change how you make your union
9:12 - Reading the Union update article
12:41 - Trying out the changes
16:41 - The update doesn't fix collision
18:50 - Method 3: Use parts instead of unions
23:52 - Occlusion culling terrain
24:33 - Parts are better than terrain
26:32 - Shadows
28:04 - Outro
Original Video - youtu.be/Ahn2P_4TDrU (Unions are bad for building... right?)
Article talking about union CSG changes - devforum.roblox.com/t/studio-solid-modeling-csg-performance-and-robustness-improvements/3256495?page=3
My Discord - discord.gg/6gFCQmzeHQ
I want to give a huge shoutout to all the really cool people who have left comments on my last video (Unions are bad for building... right? youtu.be/Ahn2P_4TDrU)
I have learned a ton from them and have made this video detailing all the new things I have learnt when it comes to making unions - Whilst also talking about ways to optimise your union usage without using blender. Hopefully this video is helpful to those who don't see the need to fit blender into their Studio workflow - keeping these principles in mind may help solve some of the problems amateur developers can have with performance in their games and studio workplaces.
In this video I also discuss the changes to union CSG operations, as detailed in the article (devforum.roblox.com/t/studio-solid-modeling-csg-performance-and-robustness-improvements/3256495?page=3)
These changes genuinely make using unions a lot more viable for regular applications, which is a relief since this update has been a long time coming.
Song used - The Scenic Sewers - Ratchet and Clank (2002) OST youtu.be/Y62y-hO0knY
Play my map Archipelago in Traitor Town for free here -
roblox.com/games/255236425/Traitor-Town
Traitor Town Discord -
discord.com/invite/35ZQYmXAJQ
My Discord - discord.gg/6gFCQmzeHQ
My Twitch-
twitch.tv/kaiwala23
0:00 - Intro
0:13 - Method 1: Reimporting unions
4:40 - Method 2: Change how you make your union
9:12 - Reading the Union update article
12:41 - Trying out the changes
16:41 - The update doesn't fix collision
18:50 - Method 3: Use parts instead of unions
23:52 - Occlusion culling terrain
24:33 - Parts are better than terrain
26:32 - Shadows
28:04 - Outro
![2.2s bugged unbeatable levels [READ DESC]](https://i.ytimg.com/vi/xDt3LjFSKOU/mqdefault.jpg "2.2s bugged unbeatable levels [READ DESC]
My followup video talking about Sunset Sandstorms bugfix update & Windy Landscape - https://youtu.be/XA_2sJtkrH0
Watch NINJADANs breakdown on the subject for an up to date breakdown of the situation - https://youtu.be/xUbQHv1h4Dc
Heres OneAlphaHelixs video on the situation - https://youtu.be/Dgn8Tn4mPdw
All the levels shown here arent actually impossible! Sunset Sandstorm and Sonic Wave received bugfixes, Black Blizzards green orb is doable if you buffer a jump off the floor beneath, and many other bugged levels that I didnt show like Windy Lanscape ARE still doable, but in order to get the max height jump off a slope you need to click on nearly the last frame of the slope in order to get it. Its much much harder than 2.11s slope physics and Im sure these levels will eventually get fixes, but as of today none of the levels shown today are impossible.
Oh, Aleph 0 is also possible. You need to actually NOT hold on the slope before that gravity portal, then buffer again *on* the portal and youll be fine.
[OLD DESCRIPTION]
Heres a handful of levels Ive tested that had some sort of change from the new 2.2 240fps physics, slope bugfix, and green orb bugfix too. I left my thoughts on the matter near the end, but well have to see how RobTop handles this situation.
Yes Ive been trying to beat Sunset Sandstorm for a while now, I currently have 26 - 100% and 68%. Luckily, I wont be able to play for a few months so whilst I miss out on new 2.2 content I wont miss out on the buggy state the game was inevitably gonna be in. I knew this was coming, I warned people of it. I just hope they dont treat RobTop too harshly and we manage to get a good compromise that keeps the level playing field of the new physics without jeopardising all 8 million old levels.
My Discord Server - https://discord.gg/6gFCQmzeHQ
My twitch - https://www.twitch.tv/kaiwala23
My GDDP - https://gddp.pro/users/8057
My GD account - https://gdbrowser.com/u/Kaiwala23")
