Is Safari causing extreme lag in your admin pages?

I should probably add that before coming on here, I had a long chat with a Shopify support bod about this and when he asked why I wouldn’t just switch to Chrome instead, I listed all my reservations, the main one being Google’s approach to privacy and another being ‘because Safari is the default browser for Macintosh so I shouldn’t have to…’, which he ‘took on board’ but I’ve had no follow up since so I assume I just got filed under ‘stubborn’!