After several users confirmed that the Microsoft Lumia 535 had issues with the touchscreen, mainly UI lags and while scrolling, Microsoft sprung into action to resolve the issue.

A Nokia post confirmed that Microsoft has rolled out a software update for the Nokia 535, which addresses the smartphones touchscreen issue and a few other fixes. The update is for both the variants—the Lumia 535 single SIM and the Lumia 535 dual SIM.

The post highlights the update changelogs and the fixes in detail, as below:

Latest software release for Lumia 535 is Lumia Denim (02054.00000.14485.370xx / 8.10.14219.341)

Touch screen performance improvements.
Cortana, the most personal digital assistant, is now available in more markets.
You can easily switch your mobile data connection on or off in the action centre.
Install phone updates more easily by scheduling them for a time that works best for you.
Stability and performance improvements.

The rollouts have started in following areas: Europe, South Africa.

Latest software release for Microsoft Lumia 535 Dual SIM is Lumia Denim (02055.00000.14511.220xx / 8.10.14226.359)

Improved touch screen performance.

Cortana, the most personal digital assistant, is now available in more markets.
Cellular data connection can be easily toggled on or off with one tap in action center.
Install phone updates more easily by scheduling them for a time that works best for you.
Stability and performance improvements.

The rollouts have started in following areas: Asia Pacific.

More information about the update and how to get it can be found here.