Lemfo LEMT freezing

Hello,
It has been almost 2 years since I got it. However, in the last year, I faced freezing in UI whenever I activate it. First, it was freeze for 1-3 seconds, and now it took longer, and sometimes it still freezes until I restart it.
I tried CCleaner; first, it works well, but then it doesn’t make any difference.
Can anyone help me fix this issue, please?

Maybe a factory reset would help after 2 years.

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