A method performed by a wireless device for applying a Channel State Information, CSI, filtering in a wireless communication network, the method comprising: - determining , a recommended CSI filtering based on measurements of one or more received reference signals from a radio network node , and an update rate of a CSI reporting to the radio network node ; - transmitting , to the radio network node , a first indication of the determined recommended CSI filtering, and a second indication of the determined update rate; - receiving , from the radio network node or another radio network node, a first configuration of CSI filtering; and - using , the received first configuration for applying CSI filtering, characterized in that : determining the recommended CSI filtering and the update rate comprises determining the update rate of the CSI reporting to a maximal value such that a performance loss sum is less or equal to what is achieved with a minimum update rate plus an offset, for a time-filtering parameter α = 0, and then determining the recommended CSI filtering to a time filtering that minimizes the performance loss sum assuming the maximal value of the determined update rate, and wherein the performance loss sum between time t i and time t j is defined by a sum of a measure of performance losses at times t k by using a DL beamforming matrix at the radio network node obtained at time t i from a time-filtering of channel covariance matrices up to time t i using a time-filtering parameter value α , where t i ≤ t k ≤ t j for i < j and t j ≥ t i plus the update rate. - determining , a recommended CSI filtering based on measurements of one or more received reference signals from a radio network node , and an update rate of a CSI reporting to the radio network node ; - transmitting , to the radio network node , a first indication of the determined recommended CSI filtering, and a second indication of the determined update rate; - receiving , from the radio network node or another radio network node, a first configuration of CSI filtering; and - using , the received first configuration for applying CSI filtering, characterized in that : determining the recommended CSI filtering and the update rate comprises determining the update rate of the CSI reporting to a maximal value such that a performance loss sum is less or equal to what is achieved with a minimum update rate plus an offset, for a time-filtering parameter α = 0, and then determining the recommended CSI filtering to a time filtering that minimizes the performance loss sum assuming the maximal value of the determined update rate, and wherein the performance loss sum between time t i and time t j is defined by a sum of a measure of performance losses at times t k by using a DL beamforming matrix at the radio network node obtained at time t i from a time-filtering of channel covariance matrices up to time t i using a time-filtering parameter value α , where t i ≤ t k ≤ t j for i < j and t j ≥ t i plus the update rate. determining the recommended CSI filtering and the update rate comprises determining the update rate of the CSI reporting to a maximal value such that a performance loss sum is less or equal to what is achieved with a minimum update rate plus an offset, for a time-filtering parameter α = 0, and then determining the recommended CSI filtering to a time filtering that minimizes the performance loss sum assuming the maximal value of the determined update rate, and wherein the performance loss sum between time t i and time t j is defined by a sum of a measure of performance losses at times t k by using a DL beamforming matrix at the radio network node obtained at time t i from a time-filtering of channel covariance matrices up to time t i using a time-filtering parameter value α , where t i ≤ t k ≤ t j for i < j and t j ≥ t i plus the update rate. <EOS>