Solution to lag during DOTA 2 Alchemist acid spray on Ubuntu 17.10
This lag has been driving me nuts and I swear it did not lag like that before I upgraded my Ubuntu to 17.10.
Problems
As per the title, every time Alchemist (a hero in DOTA 2) uses acid spray spell, the screen lags awfully, especially the mouse pointer movement. I could not describe this any better; oddly Steam’s FPS counter was showing 60 fps during the lag when it actually felt like 5-10 fps.
Aside from that, SMPlayer plays some videos outside its boundary and my screen freezes after playing a video on VLC Player for about 20 minutes.
These problems appeared since I upgraded to Ubuntu 17.10.
Solution
This problem seems to stem from Ubuntu’s move to Wayland from X.org. My laptop’s graphic drivers may not work very well in Wayland, for now so I switched to X.org and all the problems mentioned above disappeared.
To switch to X.org, logout then at the login screen, click on the settings icon and choose “Ubuntu on Xorg”.
Resolved! :)