Connect App Battery Drain

I have an iPhone 13 and used to keep the Garmin connect app open however at some points, randomly, I'd find my phone very hot in my pocket and check the battery usage to find that the Garmin connect app had just drained about 20% of my battery in less than 1hr.  I'm at a point where I cannot leave the app open or it will randomly drain the battery from my phone, some days it will use just a couple % while others it will use 20-30% or higher in cases as previously described.  It is very inconsistent with the power demand, I already have it with the background app refresh off but unless I force quit the app I am always exposed to these random power drains.  Is anyone else experiencing these issues with the app?