I want to know what time tense should I use in this sentence? I know that an adverb "Recently" is allowed to use only with the present/past perfect tenses. So I can't use it with the present simple, can I? The same question about an adverb "already". Is it correct "I already finished" or is it necessary to use the "I've already finished" instead of that?
"Recently, my imagination has been working badly" seems to be more appropriate, for the already mentioned reason that it is generally used with present/past perfect tenses.
As for the second question, "I've already finished" sounds more appropriate.