@fangchampaign As far as i recall the fps had always been limited at 120fps, so the 60hz update rate you saw earlier was probably the monitor vsync locking it for you. You can type in t.maxfps 60 to reduce the gpu load. Or, by changing the editor’s baseengine.ini (SmoothedFrameRateRange) allows you to set the limit to 60 fps of all recent and new projects.
Students try run the project on low quality settings (either change the inis to enforce it upon launch), maybe disable advanced (eg raytrace, blur, taa, etc) effects too on maps/inis, that should provide some improvements running it on outdated / low end equipments. FXAA is a viable alternative for TAA, and it happens to work out better for editing purposes anyways.