Poverty increased massively when they lost support from the USSR: 5% to 65% in Kazakhstan, 12% to 88% in Kyrgyzstan, 12% to 61% in Turkmenistan, and 24% to 63% in Uzbekistan. Tajikistan also had a civil war caused by jihadists. A majority of people in multiple of these countries wish the USSR never ended.
Sources: World Bank, ProleWiki: sources in footnotes