Dell G7 Laptop Freezing Intermittently on 20.04

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I have a Dell G7 15 7590 laptop. I recently installed Ubuntu 20.04.
Now one to two times a day the computer freezes. Sometimes it comes back and sometimes I think a full restart is required.
cat /var/log/syslog shows:
Jun 30 15:11:49 WORKCOM900 kernel: [45679.456318] iwlwifi 0000:3d:00.0: Queue 0 is inactive on fifo 2 and stuck for 2500 ms. SW [87, 88] HW [162, 162] FH TRB=0x0a5a5a5a2
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU4: Core temperature above threshold, cpu clock throttled (total events = 305)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU10: Core temperature above threshold, cpu clock throttled (total events = 305)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU6: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU3: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU11: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU0: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904471] mce: CPU9: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904196] mce: CPU5: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU4: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU10: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904195] mce: CPU1: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904195] mce: CPU7: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU2: Package temperature above threshold, cpu clock throttled (total events = 3184)
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU10: Core temperature/speed normal
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU4: Core temperature/speed normal
Jun 30 15:11:52 WORKCOM900 kernel: [45685.904752] mce: CPU0: Package temperature/speed normal

Each time it freezes there are similar messages in /var/log/syslog
Perhaps it is is somehow related to the WIFI?
I tried every suggestion in this CPU hardware errors in Ubuntu 17.04 and nothing worked.
I see other issues have been raised here and here
There are no issues with this laptop when running Windows and the laptop is brand new so I do not think it is a problem with the thermal paste.
Does anyone have any suggestions for me to try?

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Marisa

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