I have a thread using a Timer and PPI to trigger SAADC sampling at 100hz. Currently I have an app_timer also running at 100hz to sample the results of the SAADC (and its time stamp) and send notifications. However I am noticing time jitter due to the fact I'm using the CPU to send the HVX notifications. If I use a Timer and PPI to trigger the HVX calls in my BLE thread, will that cause concurrency issues since I also use PPI and Timers in my SAADC Thread?