Slow brush to eraser and vice versa lag

Can't switch tools without waiting for a few seconds. 16GB RAM, R7 M370 Radeon, i7-6820hq. How to run Corel Painter 2021 better? Tried enhanced ghost, allocation of RAM, etc

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  • Quick thought: Under Preferences > Performance, is "Use Memory (RAM) to cache application UI" enabled? Note that an imported workspace from an earlier version could cause this to not work as expected.