PETG HF issues

For the past few days I have been using PETG-HF and just cannot get it to print. I wanted to know if it is that im printing to fast(normal PLA speeds with higher temps around 250-260). Mainly the problem is bed adhesion it will start printing and print fine but it will warp and peel of the bed. .4mm nozzle 200mms speed Bambu Gray PETG-HF. Also, yes i have tried glue stick and cleaning the plate neither worked. ON BAMBU A1 with the filament in AMS LITE. I also did try drying the filament at 60 degrees farenheit for 2 days.