PCIE RM510Q 5G speed limited

Dear Quectel , When I use the adapter from PCIE to Lan 2.5G Ethernet, I am limited to 5G speed under 250 Mbps, When I switch the adapter to USB, the speed reaches 700Mbps. I am sure this is a software error, please help me.

Dear @TAP_HY
Please share your firmware.

Dear silvia
me this software: RM510QGLAAR11A04M4G_01.200.01.200.zip.

Dear @TAP_HY
RM510QGLAAR11A04M4G_01.200.01.200 is the latest one.
Do you change another ethernet cable?