使用Intel图形驱动程序在Ubuntu 20.04中显示清晰度问题

Recently I installed Ubuntu 20.04 on my Dektop machine. Though I am getting a display resolution 1920x1080, there seems to be some issue with the display driver. The fonts are not very clear, showing the staircase effect. Please see the reference picture attached.

The command sudo lshw -c video gave the following results.

display description: VGA compatible controller
   product: 8th Gen Core Processor Gaussian Mixture Model
   vendor: Intel Corporation
   physical id: 2
   bus info: pci@0000:00:02.0
   version: 00
   width: 64 bits
   clock: 33MHz
   capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
   configuration: driver=i915 latency=0
   resources: irq:127 memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:4000(size=64) memory:c0000-dffff

I have tried the solution discussed here. But could not get any improvement. How can I install the proper driver so that I can get a smooth display?