Excessive clock drift

Issue:Excessive Clock Drift

Setup:release 209 RAK7249

LoRa® Server:7249

Details:I get repeated excessive clock drift errors on my RAK7249 r209 fw. I have an external GPS attached with a good view of the sky.
Also I notice the altitude of the GPS is off by a good 150m.

SeeThu Mar 4 00:49:33 2021 user.err basicstation[1550]: [SYN:ERRO] Repeated excessive clock drifts between MCU/SX130X#0 (3 retries): 2.9ppm (threshold 2.5ppm)
Thu Mar 4 00:50:54 2021 user.err basicstation[1550]: [SYN:ERRO] Repeated excessive clock drifts between MCU/SX130X#0 (3 retries): 2.4ppm (threshold 2.0ppm)
Thu Mar 4 00:56:19 2021 user.err basicstation[1550]: [SYN:ERRO] Repeated excessive clock drifts between MCU/SX130X#0 (3 retries): 2.4ppm (threshold 2.0ppm)