Teensy 4.1 using adafruit winc 1500 and blynk hangs

I've been coding using the Teensy 3.6 using Adafruit Winc 1500 and the wifi101 library with Blynk and had no problems. I've recently switched to using the Teensy 4.1 and the same hardware. I can connect to the Wifi without a problem and also the initial Blynk.connect works. However when using Blynk.run in the Loop it hangs. I did read somwhere ther is a known problem with this setup but cannot find any details. Any help would be apreciated.
 
If anyones interested I have sorted this problem. I have an IR remote led. The remote led feedback defaults to the on board LED on the Teensy. On the 3.6 this is pin 13 as it is on the 4.1. On the 3.6 you can use pin 14 as the CLK (SPI 0) for the winc 1500. On the 4.1 this is moved to pin 13 and here lies the issue. I had let the IRemote default and as soon as I called begin on IRRemote bingo clash on pin 13. Easy fix, switch the feedback led off on IRRemote, all good now.
 
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