GoG frametime spikes and lag in-game

GoG has some abysmal frametime spikes - especially when the ads are about to shift.
However this continues in the games - Cyberpunk 2077 suffers lag spikes much akin to the spikes in GoG launcher.
Does anyone have any ideas as to how to resolve this?

EDIT: If I launch Cyberpunk 2077 on it’s own without GoG Launcher then it runs just fine - but then I do not have my rewards from GoG.