What I came across and may help the one or another here. Disable the TOPO drawing in the MFD map and also on the PFD map inset (if you use it). On a 3 hour flight today from Sweden to South France I couldn't see any loss of frames. Give it a try...
Hi Goran,
I just realise the reason of this issue.
Maybe not right.
I always turn on the main power swicth(crash up ) and battery on at the same time. Then there was no map.
I carefully watched some videos that battery switch should be turned on after warning on PFD.
I will try this tmr to check this