Is anyone else's resting heart rate extremely high or is this a non-effexor issue?

Since May 2023, my heart rate has been consistently above 100bpm and only drops to 70-80s when sleeping. I actually have gotten so used to this that it was only yesterday when it went up to 200bpm when working out I realised that it's never ever been so high.

I have taken venlafaxine for nearly 3 years (300mg but recently split dose in half) I did hear that a higher bpm and blood pressure can be side effects but to this level?

For anyone wondering I'm 22F 5"7 around 155lbs and I'm relatively good with walking and moving around. Would being unfit cause this high of a bpm?

Thanks <3