XR300 give DHCP to MAC address again again

I have  XR300   and his DHCP give me lots of error 

in monitor LOG I see he give in loop again again in five sec my network new IP and not the same even it is same MAC 

and if you look and time it is five sec time he renew the IP 

here is copy from the LOG
Wednesday, Jun 03,2020 19:43:02
[DHCP IP: (192.168.1.116)] to MAC address E8:6A:64:AB:BB:70, Wednesday, Jun 03,2020 19:41:44
[DHCP IP: (192.168.1.114)] to MAC address 50:DE:06:78:83:B0, Wednesday, Jun 03,2020 19:41:42
[DHCP IP: (192.168.1.101)] to MAC address E8:6A:64:AB:BB:70, Wednesday, Jun 03,2020 19:41:21
[DHCP IP: (192.168.1.114)] to MAC address 50:DE:06:78:83:B0, Wednesday, Jun 03,2020 19:41:12
[DHCP IP: (192.168.1.112)] to MAC address E8:6A:64:AB:BB:70, Wednesday, Jun 03,2020 19:41:05
[DHCP IP: (192.168.1.108)] to MAC address 50:DE:06:78:83:B0, Wednesday, Jun 03,2020 19:41:00
[DHCP IP: (192.168.1.107)] to MAC address 00:05:CD:2B:6E:52, Wednesday, Jun 03,2020 19:40:48
[DHCP IP: (192.168.1.103)] to MAC address 44:09:B8:98:AE:D4, Wednesday, Jun 03,2020 19:40:46
[DHCP IP: (192.168.1.100)] to MAC address 40:CB:C0:CC:99:0F, Wednesday, Jun 03,2020 19:39:33
[DHCP IP: (192.168.1.100)] to MAC address 40:CB:C0:CC:99:0F, Wednesday, Jun 03,2020 19:33:50
[DHCP IP: (192.168.1.102)] to MAC address 70:EE:50:1B:36:F4, Wednesday, Jun 03,2020 19:33:22
[DHCP IP: (192.168.1.100)] to MAC address 40:CB:C0:CC:99:0F, Wednesday, Jun 03,2020 19:32:48

all this device are connected all the time to switch and there are not powering up in this loop

One device complain that it did not get IP address only GW + DNS info but IP was missing .
I am runing FW 1.0.3.26_10.3.22 , If I go to FW  3.30 and make it factory default my router will have spped around 100mb in speedtest, If I use 3.22  I get around 600   my connection is 1000mb   fiber and I messure speed over lan.

Diffrent router give me speedtest 950 +- 30    so that is one Q, why is my router XR300 SLOW ?

PS if I turn on Traffic meter my router get down in speed to 20 mb   :(