Steam will attempt to patch games on the drive the game is on

However patching a game can require up to the entire games files to be updated.

If there is insufficient space to update the game files, or if it would put your drive in a very low disk space state, steam will stage the patched files onto a different drive. You can't change this behavior because you simply don't have the needed disk space to update the game on your SSD. Otherwise steam will just outright tell you, you have insufficient disk space and not update the game at all.

Note this is not an "Unreal" problem. It simply that a lot of the game data has to be updated in order to patch the game. Games using Unreal tend to be very large AAA games with huge install sizes which are again more likely to run into this limit. You'd have this problem with any game engine if the install size was gigantic. You're just simply not likely to run into a 120GB game made in Godot.

Also using 2 different drives to patch can actually improve performance. Steam patching is the worst case scenario for drive access read/write so by splitting that IO across 2 drives you're actually helping a lot more, and the performance of the patching won't really be as bad as you think it would be if you were patching on the same drive.

引用自 Satoru：

Steam will attempt to patch games on the drive the game is on

However patching a game can require up to the entire games files to be updated.

If there is insufficient space to update the game files, or if it would put your drive in a very low disk space state, steam will stage the patched files onto a different drive. You can't change this behavior because you simply don't have the needed disk space to update the game on your SSD. Otherwise steam will just outright tell you, you have insufficient disk space and not update the game at all.

Note this is not an "Unreal" problem. It simply that a lot of the game data has to be updated in order to patch the game. Games using Unreal tend to be very large AAA games with huge install sizes which are again more likely to run into this limit. You'd have this problem with any game engine if the install size was gigantic. You're just simply not likely to run into a 120GB game made in Godot.

Also using 2 different drives to patch can actually improve performance. Steam patching is the worst case scenario for drive access read/write so by splitting that IO across 2 drives you're actually helping a lot more, and the performance of the patching won't really be as bad as you think it would be if you were patching on the same drive.

The thign is, i had more than 460 gb free on the disc where stalker was installed, and it would only use my external HDD to patch it...

I would attempt to change the staging folder in the manifest file but this time it broke the install and it wouldn't even patch , even after restarting steam.

It would keep changing the staging folder to the external hdd..

This also seems like a thing with some specific games for some reason.