I have been on an SSRI for about 10 years now. Sertaline - 50mg daily. When I started I was using the Concept 2 a lot and I had to give that up basically because the minute it got hard I gave up. The first drug I tried made me feel very drowsy and I feel tired all the time. I couldn’t train. Cannot recall the brand. After about 3 weeks I went back and switched to sertaline and have had no side issues at all.Yes on the rower in particular I still find it mentally quite hard. If you are trying to hold 2:00 and the timer flicks over to 2:03 I am sometimes tempted to handle down, which is ridiculous really but I know it is the drug talking.
The benefits far outweigh any minor issues I have seen. Try talking to your doctor and maybe try a different medication.
Best of luck.