In order to enable TAA, open the console "~" or "F8" and enter the following commands:

• r.DefaultFeature.AntiAliasing 2 (0 - no AA, 1 - FXAA, 2 - TAA)
  
• r.TemporalAACurrentFrameWeight 0.1 (mixing jitter and temporal filter, at 200% render resolution "0.2" would be a good value)
  
• r.TemporalAASamples 64 (affects the quality of TAA at an angle to the surface, such as horizontal lines)
  
• r.Tonemapper.Sharpen 1 (it is not recommended to turn it off because without it the picture is blurry)

These commands must be entered every time after loading a level.

In order not to enter each command separately, use this:

r.DefaultFeature.AntiAliasing 2 | r.TemporalAACurrentFrameWeight 0.1 | r.TemporalAASamples 64 | r.Tonemapper.Sharpen 1