Reporting this again as i think it got lost in the forum migration. Report code: VTMH-RKVH-SRHB-KGXD Issue not present on v1.15 and earlier. Originally reported on v1.16 but still occurring on 1....
Ideas
Another symptom of this we've noticed - if you start a race and then hit restart session, from the second restart onwards, each restart has progressively lower frame rates.