i’d be cautious about updating a production machine straight to 26.2.2, especially mid-project.
if you do need to test it, i’d keep the previous Premiere version installed and run a small duplicate project first. same footage, same plugins, same export preset. that way you can compare render/export time without risking the real job.
also worth testing with:
– one ProRes/DNxHR transcode
– GPU acceleration on/off
– third-party plugins disabled
– media cache cleared to a fast local drive
not exciting advice, but version testing on a throwaway project has saved me more than once.