Just go to Chrome://flags in chrome or chromium browser url bar.
Copy and paste to find options in search.
GPU Rasterization = Enable
Override Software Rendering List = Enable
Number of Raster = 4
Threaded scrolling = Enable
fast tab/window close = Enable
Scroll Anchor Serialization = Enable
Smooth Scrolling = Enable
Experimental Web Platform features = Enable
zero-copy Tasterizer = Enable
WebRTC Echo Canceller 3. = Disable
Parallel downloading = Enable
NoState Prefetch = Enable
Experimental JavaScript = Enable
Experimental QUIC protocol = Enable